using ubuntu 14.04LTS trying to install jitsimeet >https://github.com/jitsi/jitsi-meet/blob/master/INSTALL.md
but fails to install lua-sec-prosody package
$sudo apt-get install lua-sec-prosody
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package lua-sec-prosody
sources.list contain this line at end.
deb http://packages.prosody.im/debian trusty main
I had the same problem. Changed the line in the sources.list to a previous version and it worked.
deb http://packages.prosody.im/debian precise main
From what I gather, lua-sec-prosody is an (old) fork of lua-sec that merges in some required changes. If it's not available for your platform, it means you should just use lua-sec :)
来源：https://stackoverflow.com/questions/23711653/lua-sec-prosody-unable-to-locate-package